Pressure measurement in blood treatment

A - Human Necessities – 61 – M

Patent

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A61M 1/14 (2006.01)

Patent

CA 2235601

A dialysis system or the like comprises a housing (12) carrying a dialyzer (14) having a blood inlet (18) and a blood outlet (20). Arterial and venous blood tubing sets (24) (22) are provided for respectively conveying blood between the patient and the dialyzer. At least one blood pressure transducer (44) is also provided, the transducer being carried in a connector outside of the housing (12) and connected to an electrical wire (40) for signal communication with an electronic system (46) within the housing, for determining blood pressure from signals sent by the transducer through the wire, and also for displaying the blood pressure so determined. At least one branch connection site (56) is carried on at least one of the blood tubing sets, which site removably receives the connector and transducer in a manner permitting the transducer to measure the pressure of blood in the one tubing set from a position adjacent to the blood in the tubing set.

Un système de dialyse ou similaire comprend un logement (12) portant un dialyseur (14) ayant une entrée (18) pour le sang et une sortie (20) pour le sang. Des jeux de tubulures (24) (22) pour le sang artériel et veineux permettent d'acheminer le sang entre le patient et le dialyseur. Le système comprend également au moins un transducteur (44) de pression sanguine, disposé dans un raccord situé à l'extérieur du logement (12) et raccordé à un conducteur électrique (40) permettant une transmission de signaux avec un système électronique (46) dans le logement, pour déterminer la pression sanguine à partir des signaux envoyés depuis le transducteur par le conducteur et également pour afficher la pression sanguine ainsi déterminée. Au moins un site (56) de raccordement latéral est porté par au moins un des jeux de tubulures pour le sang. Ce site reçoit, d'une manière amovible, le raccord et le transducteur, pour que le transducteur puisse mesurer la pression sanguine dans un des jeux de tubulures à partir d'une position proche du sang dans le jeu de tubulures.

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